JP2021059860A - Joint device, steel structural member having joint device, and method of using joint device - Google Patents

Abstract

To provide a joint device having new features such as reduction of labor required for correction work.SOLUTION: A joint device (30) comprising a joint member (34) and provided with a fitting slit (36) having a fixed width opening extending in the longitudinal direction of the joint member at a predetermined portion in the cross-sectional direction of the joint member is provided. Preferably, a welding surface-treated surface (46) finished by a machine tool such as a grinder, a disc sander, or a wire brush is installed at a welded portion of the joint member. Further, preferably, a groove rust preventive is applied to the welding surface-treated surface.SELECTED DRAWING: Figure 1

Description

The present invention is used when connecting steel structural members constituting a wall body used as a water area structure (revetment, quay, breakwater, diversion embankment, etc.) or a land area structure (retaining wall, earth retaining wall, etc.). The present invention relates to a joint device, a steel structural member having a joint device, and a method of using the joint device.

Conventionally, in the use of steel sheet piles and the like, so-called deformed steel sheet piles manufactured at a factory have been used when connecting a changed part of a normal line, a branching point of a normal line, a steel sheet pile of a different model, or the like. A cut steel sheet pile was used to manufacture such a deformed steel sheet pile.

However, since the deformation due to the cutting process of the steel sheet pile and the welding process as the deformed steel sheet pile is large, it takes time and effort for the straightening work to finish the steel sheet pile to a predetermined dimensional accuracy, and there are problems in terms of manufacturing cost and manufacturing period. .. In addition, there are problems in that it takes time to handle each member in the factory, the lashing work is complicated when the deformed steel sheet pile having a complicated shape is transported to the site by a trailer or the like, and the transportation efficiency is lowered. Furthermore, since it is necessary to place the deformed steel sheet pile at a predetermined location at the construction site, adjustments are made to ensure the construction accuracy of the steel sheet pile to be pre-constructed (pulling of the pre-steel sheet pile head by lever block (registered trademark), etc.). There is also a problem that it takes time and effort and causes a decrease in construction efficiency.

The present invention has been developed in view of such a situation, and is a joint device having new features such as reduction of labor required for straightening work, a steel structural member having a joint device, and a joint device. It is intended to provide usage.

The joint device according to claim 1 of the present application includes a joint member, and a fitting slit formed of an opening having a constant width extending in the longitudinal direction of the joint member is provided at a predetermined portion in the cross-sectional direction of the joint member. It is characterized by being present.

The joint device according to claim 2 of the present application is a pair in which the joint members are arranged to face each other so as to provide a gap serving as a fitting slit between the tips of one side in the joint device according to claim 1. It is characterized in that it is formed of angle-shaped steel.

The joint device according to claim 3 of the present application is arranged so as to face each other in the joint device according to claim 1 so that a gap serving as a fitting slit is provided between the tips of one of the flanges. It is characterized in that it is formed of a pair of channel-shaped steels.

The joint device according to claim 4 of the present application has a side surface of the joint device according to claim 1 so that a gap serving as the fitting slit is provided between the upper ends of the joint device and the lower ends are widened. It is characterized in that it is formed of a pair of flat steels arranged in a V shape visually.

The joint device according to claim 5 of the present application is the joint device according to any one of claims 1 to 4, wherein a surface-treated surface for welding is installed at a welded portion of the joint member. It is a feature.

The joint device according to claim 6 of the present application is characterized in that, in the joint device of claim 5, the surface-treated surface for welding is a finished surface by a machine tool such as a grinder, a disc sander, or a wire brush. Is what you do.

The joint device according to claim 7 of the present application is characterized in that, in the joint device according to claim 5 or 6, a groove rust preventive agent is applied to the surface-treated surface for welding.

The joint device according to claim 8 of the present application is formed so that the fitting slit has a width larger than a required width in the joint device according to any one of claims 1 to 7. A slit width adjusting member for narrowing the width of the fitting slit so as to have the required slit width is installed on both edges or one edge of the fitting slit. It is to be.

The joint device according to claim 9 of the present application is characterized in that, in the joint device of claim 8, the slit width adjusting member is installed on the outside or inside of the edge portion.

The joint device according to claim 10 of the present application is the joint device according to any one of claims 1 to 9, wherein a filler is filled inside the joint member. is there.

The joint device according to claim 11 of the present application is characterized in that, in the joint device of claim 10, the filler is a solid filler such as styrofoam or urethane foam.

The joint device according to claim 12 of the present application is characterized in that, in the joint device according to claim 11, a cut or a dividing line is provided at a predetermined portion of the filler.

The joint device according to claim 13 of the present application is the joint device according to any one of claims 1 to 12, wherein a diagonally processed portion is provided at the lower end of the joint member. It is a thing.

The joint device according to claim 14 of the present application is the joint device according to any one of claims 1 to 13, wherein at least a part of the opening at the lower end or the upper end is provided at the lower end or the upper end of the joint member. It is characterized in that a ground reaction force resistance member that closes is installed.

In the steel structural member having the joint device according to any one of claims 1 to 14, according to claim 15, the joint member of the joint device is a predetermined portion of the steel structural member. It is characterized in that it is fixed to.

The steel structural member having the joint device according to claim 16 of the present application has a surface-treated surface for welding installed at a welded portion of the steel structural member in the steel structural member having the joint device according to claim 15. It is characterized by being welded.

The steel structural member having the joint device according to claim 17 of the present application is the steel structural member having the joint device according to claim 16, wherein the surface-treated surface for welding is such as a grinder, a disc sander, or a wire brush. It is characterized in that it is a finished surface with a simple machine tool.

The steel structural member having the joint device according to claim 18 of the present application is the steel structural member having the joint device according to claim 16 or 17, wherein a groove rust preventive is applied to the surface-treated surface for welding. It is characterized by being welded.

The method of using the joint device according to any one of claims 1 to 14 according to claim 19 of the present application includes a step of fixing the joint member to a predetermined portion of a steel structural member. It is characterized by including.

The method of using the joint device according to claim 20 of the present application is characterized in that, in the method of use of claim 19, the fixing is performed by welding.

According to the present invention, a surface-treated surface for welding is provided in advance on a welded portion of angle-shaped steel, channel-shaped steel or flat steel forming a joint member, and a groove protection is provided on the surface-treated surface for welding. By manufacturing the joint device coated with the rust agent, it is possible to ensure the welding quality, reduce the manufacturing cost of the steel structural member having the joint device, and shorten the manufacturing period. Further, in the present invention, depending on the construction status (stretching, shrinkage, inclination, etc.) of a steel structural member having a general shape in which a joint member that has been previously constructed is not installed, a predetermined portion of the steel structural member to be subsequently constructed may be used. Since the joint device can be easily fixed, flexible construction can be performed according to the site conditions, and construction efficiency is improved. Further, when the joint device is fixed to the steel structural member, by using intermittent welding, the amount of heat input to the steel structural member can be reduced, and cost reduction and construction efficiency can be improved. In addition, the slit width can be easily adjusted by installing a slit width adjusting member according to the construction status (stretching, shrinkage, inclination, etc.) of a general-shaped steel structural member that does not install a joint member that was previously constructed. can do. Further, by installing the joint device at an angle rather than parallel to the axis of the steel structural member, it is possible to cope with the expansion, contraction, and inclination. Further, by filling the joint member with a filler, it is possible to reliably and easily prevent sediment leakage, and it is possible to delay the progress of corrosion inside the joint member. Further, by providing a diagonally processed portion at the lower end of the joint member, the penetration resistance at the time of driving can be reduced, and by providing a ground reaction force resistance member at the lower end or the upper end of the joint member, filling at the time of driving can be performed. It is possible to prevent the material from coming off.

It is a top view which showed a part of the wall body formed by the steel structural member which has the joint device which concerns on a preferable embodiment of this invention. It is an enlarged view of the part 2 of FIG. FIG. 3A is a view showing a state in which a joint member is attached to the outer surface of a flange of a hat-shaped steel sheet pile (steel structural member), and FIG. 3B is a portion 3b of FIG. 3A. 3 (c) is an enlarged view of the portion 3c of FIG. 3 (a), and FIG. 3 (d) corresponds to FIG. 3 (b) when rolled angle steel is used as a joint member. It is a figure to do. It is a series of figures which showed the state which the joint member is provided in the hat-shaped steel sheet pile at various places. It is a figure which illustrated various aspects of a joint member. FIG. 6 (a) shows an example in which a channel-shaped steel is used as a joint member, and FIG. 6 (b) shows a case where a channel-shaped steel is used as a joint member in FIG. 3 (b). The corresponding figure, FIG. 6 (c), is a view corresponding to FIG. 3 (b) in the case where rolled channel steel is used as the joint member. It is a figure which showed the example which used flat steel as a joint member. It is a figure for demonstrating the slit width adjusting member. It is a figure which showed various forms of the slit width adjusting member. 10 (a) is a schematic view showing a steel structural member installed at the boundary between the sea and land, and FIGS. 10 (b) and 10 (c) are lines 10b-10b of FIG. 10 (a). , 10c-10c, respectively. FIG. 11A is a view showing a case where a steel pipe sheet pile is used as a steel structural member, and FIG. 11B is an enlarged view of a portion 11b of FIG. 11A. FIG. 12 (a) shows an example in which the filler is filled inside the joint member, and FIGS. 12 (b) to 12 (d) illustrate an example in which the filler is provided with a cut. It is a series of figures. FIG. 13 (a) is a side view showing a diagonally machined portion at the lower end of the joint member, and FIG. 13 (b) shows a state in which a ground reaction force resistance member is installed at the diagonally machined portion at the lower end of the joint member. FIG. 13 (c) is a side view showing a state in which a ground reaction force resistance member is installed at the upper end of the joint member, and FIG. 13 (d) is a line 13d-13d of FIG. 13 (b). 13 (e) to 13 (g) are a series of views showing another aspect of the ground reaction force resistance member.

(overall structure)
Next, a joint device according to a preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a part of a wall body formed of a steel structural member having a joint device according to a preferred embodiment of the present invention, and FIG. 2 is an enlarged view of a portion 2 of FIG.

The wall body 10 shown in FIG. 1 has a box body 20 formed by assembling a pair of front wall 12, a rear wall 14, and a pair of partition walls 16 and 18 in a rectangular shape when viewed in a plane. The pair of front walls 12, the rear walls 14, and the pair of partition walls 16 and 18 are configured by connecting wall members made of steel structural members (for example, hat-shaped steel sheet piles) via fitting joints. .. Further, the internal space 22 in the box 20 is filled with a filling material (not shown).

A steel structural member having a joint device 30 is installed at a joint between the front wall 12, the rear wall 14, and the ends of the partition walls 16 and 18.

The joint device according to a preferred embodiment of the present invention, which is indicated by reference numeral 30 as a whole in FIG. 2, includes a joint member 34 fixed to the outer surface of the flange 32a of the steel structural member 32 so as to extend in the longitudinal direction. .. The joint member 34 is fixed by welding (continuous welding or discontinuous welding).

The joint member 34 may not be fixed to the steel structural member 32 before the construction of the steel structural member 32 having a general shape in which the joint member 34 is not necessarily installed. That is, depending on the construction status of the steel structural member 32 having a general shape in which the joint member 34 that has been previously constructed is not installed, it is easier to construct the joint member 34 if the joint member 34 is not fixed in advance to the steel structural member 32 that is to be constructed later. In some cases. In such a case, the joint member 34 may be left unfixed to the steel structural member 32, and the joint member 34 may be fixed to the steel structural member 32 at an appropriate time of construction. By doing so, flexible construction becomes possible.

The joint member 34 is made of a pair of angle-shaped steels. That is, as shown in FIG. 3A, the joint member 34 is made of a pair of angle-shaped steels 34 arranged so as to face each other so as to form a gap serving as a fitting slit 36 between the tips of one side 34a. It is formed. The joint member 34 is fixed to the steel structural member 32 by welding (continuous welding or discontinuous welding) the lower ends of the other sides 34b of the pair of angle-shaped steels 34 to the steel structural member 32. In the present specification, the angle-shaped steel includes, in addition to the ready-made angle steel (rolled angle steel), a member obtained by bending a steel plate into an L shape and a member obtained by joining flat steel into an L shape. Means.

In the examples shown in FIGS. 1 to 3, a hat-shaped steel sheet pile is used as the steel structural member 32.

As shown in FIG. 3A, the hat-shaped steel sheet pile 32 is mainly subjected to the flange 32a, the arm portion 32b and the joint portion 32c, which mainly resist the bending moment when a load such as soil water pressure is applied, and the shearing force. It has a web 32d to resist. More specifically, in the hat-shaped steel sheet pile 34, a pair of webs 32d are continuously arranged so as to extend outward from both edges of the flange 32a, and each web 32d is substantially parallel to the flange 32a. The arm portions 32b are continuously arranged so that the arm portions 32b are continuously provided, and the joint portions 32c are continuously provided on the arm portions 32b.

An upper opening claw 32c1 is formed on one of the joint portions 32c of the hat-shaped steel sheet pile 32, and a lower opening claw 32c2 is formed on the other side of the joint portion 32c. The upper opening claw 32c1 and the lower opening claw 32c2 are shaped to complement each other, and the joint portion 32c of the joint portion 32c of one hat-shaped steel sheet pile 32 is adjacent to the joint of the other hat-shaped steel sheet pile 32. By fitting the lower opening claw 32c2 of the portion 32c, or by fitting the lower opening claw 32c2 of the joint portion 32c of one hat-shaped steel sheet pile 32, the upper opening claw of the joint portion 32c of the other hat-shaped steel sheet pile 32 adjacent to the lower opening claw 32c2. By fitting 32c1, a desired number of hat-shaped steel sheet piles 32 can be fitted.

(Joint member)
In the example shown in FIGS. 2 and 3A, the joint member 34 is fixed to the outer surface (mountain side) of the flange 32a of the steel structural member 32, but if necessary, the joint member 34 is made of steel. It may be fixed at a desired position of the structural member 32. For example, the joint member 34 may be fixed to the outer surface (mountain side) of the web 32d (see FIG. 4A), or fixed to the inner surface (valley side) of the flange 32a or the inner surface (valley side) of the web 32d. It may be (see FIGS. 4 (b) and 4 (c), respectively).

Basically, the joint device 30 prepares a plurality of parts having a predetermined length (about 1 m to 3 m) in consideration of transportation and handling convenience, and arranges a plurality of these parts to make a predetermined length. Used. In the range where it is necessary to prevent sediment leakage from the back surface, the joint members 34 are arranged in close contact (metal touch), and if necessary, the connecting portions between the parts are welded directly or via a splicing plate. Parts may be arranged in a discontinuous (intermittent) state as long as it is not necessary to prevent sediment leakage from the back surface. 5 (a) to 5 (c) are views illustrating various aspects of the joint member 34. In the aspect shown in FIG. 5A, the joint member 34 is formed of one part having a length L. Further, in the embodiment shown in FIG. 5B, the joint member 34 is formed of two parts having a length L1 and a length L2. In the embodiment shown in FIG. 5C, the joint device 30 is formed by arranging two parts having a length L3 and a length L4 in a discontinuous (intermittent) state. In the illustrated example, the number of parts is one or two, but the number of parts may be three or more.

FIG. 6 shows a form in which channel-shaped steel is used as the joint member 34. That is, in the form shown in FIG. 6, a pair of channel-shaped steels 34 are arranged to face each other so as to form a gap serving as a fitting slit 36 between the tips of the upper flanges 34a, and the lower flanges 34b are made of steel. It is fixed to the steel structural member 32 by welding (continuous welding or discontinuous welding) to the structural member 32. In the present specification, the channel-shaped steel refers to a channel steel (rolled channel steel) as an off-the-shelf product, as well as a member or flat steel formed by pressing a steel plate into a U-shape. It means that the joined members are included.

FIG. 7 shows a form in which flat steel is used as the joint member 34. That is, in the form shown in FIG. 7, a pair of flat steels arranged in a "C" shape in a side view so that a gap serving as a fitting slit 36 is provided between the upper ends 34a and the lower ends 34b are widened. Are arranged to face each other, and the lower ends 34b are fixed to the steel structural member 32 by welding (continuous welding or discontinuous welding) to the steel structural member 32.

The joint member 34 may not necessarily be fixed to the steel structural member 32 before the construction of the steel structural member 32. That is, depending on the construction status (stretching, shrinkage, inclination) of the steel structural member 32 having a general shape in which the joint member 34 that has been previously constructed is not installed, the joint member 34 is preliminarily attached to the steel structural member 32 that is to be constructed later. It may be easier to install if it is not fixed. In such a case, the joint member 34 may be left unfixed to the steel structural member 32, and the joint member 34 may be fixed to the steel structural member 32 at an appropriate time of construction.

(Surface treatment surface for welding)
When the joint member 34 is fixed to the steel structural member 32 by welding, it is preferable to install the surface-treated surface 46 for welding at the welding portion of both or one of the joint member 34 and the steel structural member 32. The welding surface-treated surface 46 is a welding surface that does not adversely affect the welding quality, and the welding surface-treated surface 46 removes impurities (rust, dirt, dust, paint, etc.) that adversely affect welding. ing. In order to obtain a welded surface that does not adversely affect the weld quality, the welded portion is surface-treated so as to have a glossy surface. Specifically, the surface-treated surface 46 for welding is surface-treated by mechanical finishing using a tool such as a grinder, a disc sander, or a wire brush.

Even if the machine is finished, it will rust over time. Therefore, it is preferable to apply the groove rust preventive after the machine is finished with a grinder or the like. The groove rust preventive is preferably a non-transparent color (for example, silver). By using a non-transparent groove rust preventive, the welded part becomes clear at a glance, the welded part becomes clear, and the welding quality can be easily controlled visually or by a photograph. The groove rust preventive is an anticorrosive paint, but welding without removing the groove rust preventive does not adversely affect the welding quality.

FIG. 3B is an enlarged view of a portion 3b of FIG. 3A showing a case where the other side 34b of the joint member 34 is fixed to the steel structural member 32 by fillet welding. The lower end of the other side 34b to which fillet welding is performed and the portion of the steel structural member 32 serve as the surface-treated surface 46 for welding. FIG. 3C is an enlarged view of a portion 3c of FIG. 3A showing a case where the other side 34b of the joint member 34 is fixed to the steel structural member 32 by groove welding. The groove surface at the lower end of the other side 34b to which groove welding is performed and the portion of the steel structural member 32 serve as the welding surface-treated surface 46. FIG. 3D is a diagram corresponding to FIG. 3B when rolled angle steel is used as the joint member 34. In FIGS. 3 (b) and 3 (c), the joint member 34 is shown as an example of being formed of angle-shaped steel, but when the joint member 34 is made of channel-shaped steel or flat steel. Also, it is preferable to install the surface-treated surface 46 for welding. FIG. 6 (b) is a diagram corresponding to FIG. 3 (b) when a channel steel is used as the joint member 34, and FIG. 6 (c) is a diagram in which rolled channel steel is used as the joint member 34. It is a figure corresponding to FIG. 3 (b) in the case of.

(Slit width adjusting member)
A slit width adjusting member 40 for narrowing the slit width may be installed at both edges of the fitting slit 36 of the joint member 34. That is, as shown in FIG. 8, the initial fitting slit 36 is formed so as to have a width (B + 2 × ΔB) larger than the required width B, and the slit width adjusting member 40 is installed. , The width of the slit can be narrowed to obtain the required slit width B. Note that ΔB may have different values such as ΔB1 and ΔB2. In this case, the initial width of the fitting slit 36 is B + ΔB1 + ΔB2, but the required slit width B can be obtained by installing the slit width adjusting member 40. Although the slit width adjusting member 40 is fixed to the joint member 34 by fusion welding means, it may be fixed to the joint member 34 by mechanical means (not shown). When the slit width adjusting member 40 is fixed to the joint member 34 by welding, the welding may be continuous welding or intermittent welding. By adopting intermittent welding, it is possible to reduce the processing cost and shorten the processing period.

The gap formed by the fitting slit 36 and the male joint fitted therein is the joint of the steel sheet pile specified in JIS A5523 (hot rolled steel sheet pile for welding) and JIS A5528 (hot rolled steel sheet pile). It is desirable to install the slit width adjusting member 40 so as to be about the same as the gap of the fitting portion. The specific value of the gap is about 1 mm to 5 mm. The gap should be narrow as long as it does not interfere with the placement of the steel structural member 32.

The slit width adjusting member 40 is made of a steel member. The slit width adjusting member 40 includes various members such as flat steel (see FIG. 9A), round bar (see FIG. 9B), square bar (see FIG. 9C), and angle steel (see FIG. 9C). (See FIGS. 9 (d) and 9 (e)) and the like are used.

Further, the slit width adjusting member 40 may be installed not on both edges of the fitting slit 36 but only on one edge (see FIG. 9 (f)). If it is installed only on one edge, the processing cost can be reduced and the processing period can be shortened. The slit width adjusting member 40 may be installed outside or inside the fitting slit 36, but the installation work is easier if it is installed outside. When installed inside, the ease of installation work is inferior.

The installation location of the slit width adjusting member 40 when the earth and sand are arranged on the back surface of the wall body 10 is as follows. When the sediment outflow is to be suppressed at the entrance, the slit width adjusting member 40 is installed on the back side. The slit width adjusting member 40 is installed on the front side when the sediment outflow is to be suppressed at the exit. When the sediment outflow is to be suppressed at both the entrance and the exit, the slit width adjusting member 40 is installed on both the front side and the back side.

Although an example in which a hat-shaped steel sheet pile is used as the steel structural member 32 has been described, the configuration of the joint device 30 is substantially the same even when another steel sheet pile such as the U-shaped steel sheet pile is used.

The joint member 34 to be a female joint may be provided over the entire length of the steel structural member 32, or may be shorter than the total length, and the earth and sand existing in a predetermined range (at least, the earth and sand existing on the back surface of the wall body causes earth and sand leakage). It may be provided over a range). FIG. 10 is a schematic view showing an example of installation of the female joint and the male joint on the steel structural member 32. In FIG. 10B, a female joint is installed in the upper half of one side of the steel structural member 32, a male joint is installed in the upper half of the other side of the steel structural member 32, and a male joint is installed in the lower half. A guide section is installed. FIG. 10 (c) is the same as the example of FIG. 10 (b) except that the guide portion is intermittently installed. The guide portion is useful for improving the workability of fitting the joint, particularly when the steel structural member is a steel pipe sheet pile as described later. The upper end of the steel structural member is usually embedded in the upper concrete (see FIG. 10A).

(Jointing device for steel pipe sheet pile)
Further, as the steel structural member 32, a steel pipe pile or a steel pipe sheet pile may be used instead of the steel sheet pile. FIG. 11A is a plan view showing a part of the wall body formed by the steel pipe sheet pile, and FIG. 11B is an enlarged view of the portion 11b of FIG. 11A.

The wall body shown in FIG. 11A is formed by fitting a plurality of steel pipe sheet piles 32 (three are shown in FIG. 11A) via a joint described later, and is formed by fitting the sea and land. (In FIG. 11A, the right side is shown as the sea and the left side is shown as land (earth and sand)).

In the case of the steel pipe sheet pile 32, a T-shaped joint which is a male joint and a joint device 30 which is a female joint are provided at locations facing each other in the diameter direction of the steel pipe sheet pile 32. The illustrated joint member 34 is formed of a pair of angle-shaped steels. The joint member 34 is provided with a fitting slit 36 extending in the longitudinal direction, and a T-shaped joint serving as a male joint is fitted into the fitting slit 36 of the joint member 34 of the adjacent steel pipe sheet pile 32. Can be combined with a desired number of steel pipe sheet piles 32. The joint member 34 may be fixed in advance to a predetermined portion of the steel structural member 32, as in the case of the steel structural member 32 of the steel sheet pile described above, or the steel structural member 32 may be predetermined at the construction stage. It may be fixed to the site.

A slit width adjusting member 40 for narrowing the slit width may be installed at the edge of the fitting slit 36 of the joint member 34. That is, the required slit width B can be obtained by setting the width of the initial fitting slit 36 to a width (B + ΔB) larger than the required width B and installing the slit width adjusting member 40. Although the slit width adjusting member 40 is fixed to the joint member 34 by fusion welding means, it may be fixed to the joint member 34 by mechanical means (not shown). Although two slit width adjusting members 40 are installed in FIG. 11B, the number of slit width adjusting members 40 installed may be one.

In the above example, the joint member 34 is formed of angle-shaped steel, but channel-shaped steel or flat steel may be used as the joint member 34.

(Structure at the lower end of the joint member)
When the steel structural member 32 is to be driven into the ground, a penetration resistance acts on the lower end of the joint member 34. In order to reduce this penetration resistance, it is preferable to process the lower end of the joint member 34 so as to be oblique in a side view. FIG. 13A shows an example of an obliquely machined portion 34c provided at the lower end of the joint member 34.

(Jointing device filled with filler)
Preferably, the inside of the joint member 34 is filled with the solid filler 42. Taking a joint member 34 made of a pair of angle-shaped steel as an example, the filler 42 is filled inside the joint member 34 as shown in FIG. 12 (a). As the filler 42, for example, a solid filler (styrofoam, urethane foam, etc.) and a time-curable filler (bitumenous material, urethane, rubber, soil cement, etc.) are used. By filling the inside of the joint member 34 with the filler 42, it is possible to more reliably and easily prevent sediment leakage, and it is possible to delay the progress of corrosion in the joint member 34. The filling timing of the filler 42 is appropriately determined according to the properties of the filler 42 and the construction environment of the steel structural member 32. That is, the filling timing of the filler 42 is, in the case of a solid filler, before the construction of the steel structural member 32 (inserted into the joint member 34 in a horizontal state), and the filling is curable over time. In the case of a material, after the construction of the steel structural member 32 (to utilize the own weight of the filler 42. Filling is performed by using the own weight of the material from the upper end of the joint member 34. In some cases, pumping is performed). Is.

When a solid filler (styrofoam, urethane foam, etc.) is used as the filler 42, a cut or a dividing line 42a may be provided at a predetermined portion of the filler 42 (FIGS. 12 (b) to 12 (b)). See FIG. 12 (d)). By providing the cut or dividing line 42a, when the male member is inserted into the fitting slit 36, the male member is inserted into the cut or dividing line 42a and the filler 42 is smoothly broken to eliminate the gap. This makes it possible to prevent sediment leakage more reliably. The breaks or dividing lines 42a shown in FIGS. 12 (b) to 12 (d) are exemplary and are not limited thereto. The cut or dividing line 42a is determined in consideration of the shape of the male joint. In the form shown in FIG. 12D, the filler 42 having a rectangular cross section is divided into four parts (therefore, the dividing line 42a enters the cross) and fixed with kraft tape (gum tape) or the like to form the joint member 34. It is to be inserted inside.

(Ground reaction force resistance member)
When the steel structural member 32 is to be driven into the ground, if the filler 42 is pre-filled inside the joint member 34, a ground reaction force acts on the lower end of the filler 42 as the casting progresses. However, there is a possibility that the filler 42 will come out. In order to prevent the filler 42 from coming off, it is preferable to install a ground reaction force resistance member 44 that closes at least a part of the opening at the lower end or the upper end of the joint member 34. When the ground reaction force resistance member 44 is installed at the upper end of the joint member 34, the ground reaction force resistance member 44 may interfere when the male joint is fitted into the fitting slit 36. In such a case, it is necessary to remove at least the interference portion of the ground reaction force resistance member 44. 13 (b) to 13 (g) are a series of views illustrating the ground reaction force resistance member 44. That is, FIG. 13B is a side view showing a state in which the ground reaction force resistance member 44 is installed at the lower end of the joint member 34 provided with the diagonally processed portion 34c, and FIG. 13C is a side view showing the joint member. A side view showing a state in which the ground reaction force resistance member 44 is installed at the upper end of the 34, FIG. 13 (d) is a plan view seen along the line 13d-13d of FIG. 13 (b). In the example shown in FIG. 13 (d), the lower end of the joint member 34 is completely closed by the ground reaction force resistance member 44, but as shown in FIGS. 13 (e) to 13 (g), A part of the lower end of the joint member 34 may be closed. The closing mode of a part of the lower end of the joint member 34 is not limited to the form shown in FIGS. 13 (e) to 13 (g).

In the example shown in FIG. 13B, the ground reaction force resistance member 44 is installed at the lower end of the joint member 34 provided with the diagonally machined portion 34c, but the joint member 34 not provided with the diagonally machined portion 34c. The ground reaction force resistance member 44 may be installed at the lower end. In the illustrated example, the outer edge of the ground reaction force resistance member 44 substantially coincides with the outer edge of the joint member 34, but the outer edge of the ground reaction force resistance member 44 may exceed the outer edge of the joint member 34. Good. Further, the ground reaction force resistance member 44 may be fixed to the joint member 34 by welding or the like, or may be fixed to the steel structural member 32.

When the lower end of the fitting portion of the male joint into the fitting slit 36 is lower than the installation position of the ground reaction force resistance member 44, the male joint penetrates to a predetermined position. It is necessary to destroy the ground reaction force resistance member 44. Therefore, it is preferable that the ground reaction force resistance member 44 is welded to the joint member 34 or the steel structural member 32 by simple welding. Further, the ground reaction force resistance member 44 is also preferably a member having low rigidity (steel plate or the like).

(How to use the fitting device)
When using the joint device 30, the joint member 34 is fixed to a predetermined portion of the steel structural member 32 according to the construction situation at the construction site or the manufacturing situation at a factory or the like. Fixing is done by welding (continuous or discontinuous welding).

The wall body 10 is formed by fitting or arranging a large number of steel structural members 32 and burying the lower portion in the lower support. The lower support is foundation ground or concrete footing. The foundation ground also includes the ground formed by the improved soil. The wall body 10 is embedded in the foundation ground by vibration driving with a vibro hammer, impact driving with a hydraulic hammer, press-fitting with a hydraulic press-fitting device, and the like.

The present invention is not limited to the embodiments of the above invention, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. It goes without saying that it is a thing.

For example, the details of the components shown are merely exemplary and may be modified.

10 Walls 12, 14 Front walls, rear walls 16, 18 Partitions 20 Boxes 22 Interior space 30 Jointing equipment 32 Steel structural members (hat-shaped steel sheet piles, steel pipe sheet piles)
32a Flange 32b Arm part 32c Joint part 32d Web 34 Joint member 34a One side, upper flange, upper end 34b Other side, lower flange, lower end 34c Diagonal processing part 36 Fitting slit 40 Slit width adjusting member 42 Filler 42a Cut, dividing line 44 Ground reaction force resistance member 46 Surface-treated surface for welding

Claims (20)

Equipped with joint members
A joint device characterized in that a fitting slit formed of an opening having a constant width extending in the longitudinal direction of the joint member is provided at a predetermined portion in the cross-sectional direction of the joint member. The first aspect of claim 1 is characterized in that the joint member is formed of a pair of angle-shaped steels arranged so as to be opposed to each other so as to provide a gap serving as a fitting slit between the tips of one side. Fitting device. The first aspect of the present invention is characterized in that the joint device is formed of a pair of channel-shaped steels arranged so as to be opposed to each other so as to provide a gap serving as a fitting slit between the tips of one flange. The described fitting device. The joint device is characterized in that it is formed of a pair of flat steels arranged in a V shape in a side view so that a gap serving as a fitting slit is provided between the upper ends and the lower ends are widened. The joint device according to claim 1. The joint device according to any one of claims 1 to 4, wherein a surface-treated surface for welding is installed at a welded portion of the joint member. The joint device according to claim 5, wherein the surface-treated surface for welding is a finished surface by a machine tool such as a grinder, a disc sander, or a wire brush. The joint device according to claim 5 or 6, wherein a groove rust preventive is applied to the surface-treated surface for welding. The fitting slit is formed so as to have a width larger than the required width, and the fitting slit is formed on both edges or one edge of the fitting slit so as to have the required slit width. The joint device according to any one of claims 1 to 7, wherein a slit width adjusting member for narrowing the width of the slit is installed. The joint device according to claim 8, wherein the slit width adjusting member is installed outside or inside the edge portion. The joint device according to any one of claims 1 to 9, wherein a filler is filled inside the joint member. The joint device according to claim 10, wherein the filler is a solid filler such as styrofoam or urethane foam. The joint device according to claim 11, wherein a cut or a dividing line is provided at a predetermined portion of the filler. The joint device according to any one of claims 1 to 12, wherein an obliquely processed portion is provided at the lower end of the joint member. Any one of claims 1 to 13, characterized in that a ground reaction force resistance member that closes at least a part of the opening at the lower end or the upper end is installed at the lower end or the upper end of the joint member. The fitting device described in. A steel structural member having a joint device, wherein the joint member of the joint device according to any one of claims 1 to 14 is fixed to a predetermined portion of the steel structural member. The steel structural member having the joint device according to claim 15, wherein a surface-treated surface for welding is installed at a welded portion of the steel structural member. The steel structural member having the joint device according to claim 16, wherein the surface-treated surface for welding is a finished surface by a machine tool such as a grinder, a disc sander, or a wire brush. The steel structural member having the joint device according to claim 16 or 17, wherein a groove rust preventive is applied to the surface-treated surface for welding. The method of using the joint device according to any one of claims 1 to 14.
A method of use comprising a step of fixing the joint member to a predetermined portion of a steel structural member. The method of use according to claim 19, wherein the fixing is performed by welding.

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